1226121722 has 16 divisors (see below), whose sum is σ = 2110650432. Its totient is φ = 523298880.

The previous prime is 1226121713. The next prime is 1226121727. The reversal of 1226121722 is 2271216221.

It is a junction number, because it is equal to n+sod(n) for n = 1226121691 and 1226121700.

It is not an unprimeable number, because it can be changed into a prime (1226121727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178328 + ... + 185075.

It is an arithmetic number, because the mean of its divisors is an integer number (131915652).

Almost surely, 2^1226121722 is an apocalyptic number.

1226121722 is a deficient number, since it is larger than the sum of its proper divisors (884528710).

1226121722 is a wasteful number, since it uses less digits than its factorization.

1226121722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363653.

The product of its digits is 1344, while the sum is 26.

The square root of 1226121722 is about 35016.0209332814. The cubic root of 1226121722 is about 1070.3139737179.

Adding to 1226121722 its reverse (2271216221), we get a palindrome (3497337943).

The spelling of 1226121722 in words is "one billion, two hundred twenty-six million, one hundred twenty-one thousand, seven hundred twenty-two".